Scoping problelm using slice concatenation?

programming flash
1

When I trace the variable it comes out fine. But when I try to toggle the visibility with it, it doesn’t work. I can toggle visibility when I manually type the path name. What am I missing? Checked for possible spaces too. Stumped!

    
tempHolder.onRelease = function() {
        arrowName = "arrow"+this._name.slice(5);
        arrowName._visible = true; //<-- This doesn't work
        trace(arrowName);             //<-- The trace says arrow1
        // arrow1._visible=true;        <-- This works
        trace("*"+arrowName+"*");             //<-- This says *arrow1* no spaces
}